Marvelous Community,
here is a very interesting and important Discussion!
What is your preferred NPC behavior? Do you like them unpredictable? When do the NPCs and mobs become annoying?
As usual, we can't wait to read all of your comments and ideas!
Retreating mobs are by far the most annoying. More so when they retreat and bring back multiple friends instead of just one to help them. Anything that automatically engages you shouldn't flee in fear when they end up losing. A mob that we attack and engage has more reason to flee in fear than something/someone that attacked us first.
Annoying for an NPC would be a vendor walking away while I am still buying/selling stuff to them.